Sharon Osbourne took an unexpected leave of absence for five weeks from The Talk and has now revealed that it was because she had a 'complete breakdown'.

The X Factor judge, who appeared on the panel of the CBS chat show on Monday, hadn't been ready to discuss what happened before but has now chosen to speak out.

Speaking for the first time a year later, Sharon said that she felt comfortable opening up about her issues because she felt as if she had a “good grip” on her condition and that she was “in control”.

“I had a complete and utter breakdown. I woke up in Cedars-Sinai hospital and for three days I knew nothing. I couldn't think, I couldn't talk,” she said.

“My brain shut down on me.”

Sharon Osbourne opened up about her condition and the help she's had

Sharon said that she had “taken on too much” in her life and that her “brain had fused”.

“My family put me in this facility and in this facility they diagnose you,” she said, revealing that with different treatments she had found group therapy sessions were the best.

Comforted by her Talk co-hosts, Julie Chen, Sara Gilbert, Aisha Tyler and Sheryl Underwood, Sharon admitted that she wanted to talk about her condition to help others.

Describing her mind was “like a whirlpool”, Sharon revealed that she lost her appetite as well as her voice as she didn't want to talk to anyone.

Sharon Osbourne on The Talk

Sharon was supported by her Talk co-hosts

Sharon said that she had 'taken on too much' travelling the world, managing her husband Ozzy's Black Sabbath tour as well as sponsorship work.

The star had someone there for three days in hospital with her before she was recommended to visit a specialist facility.

It took Sharon seven months to find the right medication and to find the right therapist.

She revealed how she's learned to meditate which helps her deal with the day-to-day.

Sharon said that she felt “alone” and that she couldn't explain to other people what she was experiencing.

Having recovered, Sharon returned to the judges' panel on The X Factor (Image: ITV)

Last month, Sharon's husband Ozzy revealed that he is undergoing "intense" therapy for sex addiction.

The Black Sabbath rocker - who recently reconciled with wife Sharon following a brief split when it emerged he had been unfaithful with hairdresser Michelle Pugh - has apologised to the women he has been having "sexual relationships" with outside of his marriage and admitted he is "mortified" at how his conduct affected his family.

A statement from his representative given to People magazine read: "Over the last six years, Ozzy Osbourne has been dealing with a sex addiction. He is sorry if Ms. Pugh took their sexual relationship out of context.

"He would like to apologise to the other women he has been having sexual relationships with.

Ozzy and Sharon are currently working on their marriage as the rocker gets treatment for sex addiction (Image: PA)

"Out of the bad comes good. Since his relationship with Ms. Pugh was exposed, Ozzy has gone into intense therapy.

"Ozzy is mortified at what his behaviour has done to his family.

"He thanks God that his incredible wife Sharon is at his side to support him."